Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
SFML Game Development By Example

You're reading from   SFML Game Development By Example Create and develop exciting games from start to finish using SFML

Arrow left icon
Product type Paperback
Published in Dec 2015
Publisher
ISBN-13 9781785287343
Length 522 pages
Edition 1st Edition
Languages
Arrow right icon
Author (1):
Arrow left icon
Raimondas Pupius Raimondas Pupius
Author Profile Icon Raimondas Pupius
Raimondas Pupius
Arrow right icon
View More author details
Toc

Table of Contents (16) Chapters Close

Preface 1. It's Alive! It's Alive! – Setup and First Program FREE CHAPTER 2. Give It Some Structure – Building the Game Framework 3. Get Your Hands Dirty – What You Need to Know 4. Grab That Joystick – Input and Event Management 5. Can I Pause This? – Application States 6. Set It in Motion! – Animating and Moving around Your World 7. Rediscovering Fire – Common Game Design Elements 8. The More You Know – Common Game Programming Patterns 9. A Breath of Fresh Air – Entity Component System Continued 10. Can I Click This? – GUI Fundamentals 11. Don't Touch the Red Button! – Implementing the GUI 12. Can You Hear Me Now? – Sound and Music 13. We Have Contact! – Networking Basics 14. Come Play with Us! – Multiplayer Subtleties Index

The scrollbar element


All of that support for interface scrolling and control elements implies the existence of the scrollbar element. Its purpose is to move around the visible area of the content texture in order to reveal elements that are positioned further out than its size allows, which could be along any axis. With that knowledge, let's take a stab at working out the basic class definition of the scrollbar element:

enum class SliderType{ Horizontal, Vertical };

class GUI_Scrollbar : public GUI_Element{
public:
  ...
  void SetPosition(const sf::Vector2f& l_pos);
  void ApplyStyle();
  void UpdateStyle(const GUI_ElementState& l_state,
    const GUI_Style& l_style);
private:
  SliderType m_sliderType;
  sf::RectangleShape m_slider;
  sf::Vector2f m_moveMouseLast;
  int m_percentage;
};

Firstly, we enumerate both possible types of sliders: horizontal and vertical. The actual GUI_Scrollbar class overwrites three of the original methods the parent class provides, in addition...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image